Nonwoven pouch comprising heat sealable binder fiber

a non-woven, fiber-based technology, applied in the field of pouches, can solve the problems of affecting the biodegradability of the discarded pouch, the cost of applying conventional binders to the fibrous pouches, and the inability to meet the needs of packaging,

Active Publication Date: 2016-03-17
R J REYNOLDS TOBACCO COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional binders applied to such fibrous pouches, such as acrylic polymers, are costly to apply to pouches and inhibit biodegradability of the discarded pouch.

Method used

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  • Nonwoven pouch comprising heat sealable binder fiber
  • Nonwoven pouch comprising heat sealable binder fiber
  • Nonwoven pouch comprising heat sealable binder fiber

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0076]The following non-limiting example describes how a nonwoven web and pouch can be made with monocomponent PLA fibers as the heat sealable binder fiber.

[0077]PLA and Rayon fibers are provided having 1.5 dtex, 40 mm length, 7 crimp / cm and 4 g / den tenacity. The fibers are blended in varying ratios by weight (PLA:Rayon). Each blended fiber is carded, which produces webs with parallel fiber orientation. The PLA and Rayon blended material is thermally bonded with heated calendar rolls with an embossed pattern to apply pressure at controlled areas of the fleece. Less than 30% of the fleece is point bonded.

[0078]The fabric is heat sealed. The heat seal is measured in the machine direction using a peel test. It is found that a higher percentage of PLA results in a stronger heat seal.

example 2

[0079]The following non-limiting example describes how a nonwoven web can be made with blended PLA fibers as the heat sealable binder fiber.

[0080]PLA:Viscose fibers are provided having 1.5 dtex, 40 mm length, 7 crimp / cm and 4 g / den tenacity. The fibers are blended in the following ratios by weight (PLA:Viscose): (a) 50:50; and (b) 60:40. The fleece fabric target weight is 30 gsm.

[0081]Each blended fiber is carded on a Erko Trüzschler Card machine.

[0082]Each blended fiber is hydroentangled with a machine having 1 pre-wetting nozzle and 4 bonding injectors (nozzles). The size of the nozzles change from 7-14 microns. Pressure is 15 bars for pre-wetting and 0-130 bars for bonding nozzles. The hydroentangling machine can include embossed drum surfaces and / or aperture drum surfaces. For fabrics with a basis weight of about 30 gsm, the line speed is 100 m / min. For fabrics with a basis weight of about 90 gsm, the line speed is 30 m / min.

[0083]The hydroentangled web then undergoes an ultrason...

example 3

[0084]The following non-limiting example describes pouches formed from the hydroentangled web formed according to Example 2 above.

[0085]Rolls of the hydroentangled fabric made according to Example 2 above and measuring about 30-31 mm in width are provided. Pouches are formed from the nonwoven fabric on a Merz machine.

[0086]The pouches are able to be sealed appropriately. However, the nonwoven fabrics incorporating the PLA heat sealable binder encountered elongation and shrinkage problems. Accordingly, rolls of the nonwoven fabric measuring about 41 mm-45 mm in width are used to account for the fabric shrinkage. In addition, one or more surfaces of the pouching equipment that come in contact with the nonwoven material (e.g., rollers, cutting instruments, sealing devices, etc.) can be coated with Teflon to counteract any tackiness or stickiness that may be associated with certain embodiments of the nonwoven fabric of the invention.

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Abstract

A pouched product adapted for release of a water-soluble component therefrom is provided herein. The pouched product can include an outer water-permeable pouch defining a cavity containing a composition that includes a water-soluble component capable of being released through the water-permeable pouch and has a surface area, wherein the outer water-permeable pouch can include a nonwoven web including a plurality of heat sealable binder fibers blended with a second plurality of dissimilar fibers. The nonwoven web can be carded, hydroentangled and point bonded.

Description

FIELD OF INVENTION[0001]The present disclosure relates to a pouched product adapted for oral use and a method of manufacturing thereof. In certain embodiments, the present invention relates to products made or derived from tobacco, or that otherwise incorporate tobacco, and are intended for human consumption.BACKGROUND[0002]Certain types of pouches or sachets have been employed to contain compositions adapted for oral use. For example, tobacco can be enjoyed in a so-called smokeless form. Particularly popular smokeless tobacco products are employed by inserting some form of processed tobacco or tobacco-containing formulation into the mouth of the user. See for example, the types of representative smokeless tobacco products, as well as the various smokeless tobacco formulations, ingredients and processing methodologies, referenced in the background art set forth in U.S. Pat. Pub. Nos. 2011 / 0303511 to Brinkley et al. and 2013 / 0206150 to Duggins et al.; which are incorporated herein by...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A24F23/02A24B13/00B65B9/067B65B29/02B65B51/10B65B61/06
CPCA24F23/02A24B13/00B65B29/02B65B51/10B65B61/06B65B9/067B65D85/808D04H1/425D04H1/49D04H1/55B65D65/46D04H1/435D04H1/54
Inventor SEBASTIAN, ANDRIES DONBUSBEE, ALTONMABE, JEREMY BARRETTPU, YANHUNT, ERIC TAYLORBENGTSSON, BRUCE ALAN
Owner R J REYNOLDS TOBACCO COMPANY
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